ouuuccchh (in my best ET voice). I'll try.
I'm not sure that I know what is pure ADO.NET. Would you consider the code posted above http://community.entityspaces.net/forums/permalink/3768/3675/ShowThread.aspx#3675 to be pure ADO.NET? If so, I'll attempt to get a trace for you.
BUT, You do have an example of a call to a procedure in a package that returns a refcursor
MYGENERATION.esAggregateTestLoadByPK
Maybe if I can see that that portion of the package, I can figure out what syntax it takes to make that type of call work.
Curtis